add .gitignore to exclude common Python and environment files

.gitignore

@@ -0,0 +1,39 @@
+# Python
+__pycache__/
+*.py[cod]
+*.pyo
+*.pyd
+*.egg
+*.egg-info/
+dist/
+build/
+.eggs/
+
+# Virtual environments
+.venv/
+venv/
+env/
+ENV/
+
+# Environment variables
+.env
+.env.*
+
+# Jupyter Notebooks
+.ipynb_checkpoints/
+
+# macOS
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# VS Code
+.vscode/
+
+# Logs
+*.log
+logs/
+
+# Gradio temp files
+gradio_cached_examples/
+flagged/